I would definitely take Incogneato's advice as of today there is a model 91524 listed on gunbroker w/o the nite sites and 2 others (91521) with them. I also bought one from grabagun the other day that had them listed totally wrong they had the rite SKU but they called it a black gun. I only purchased it because I knew they let you cancel a order in the first day with no extra fee. Then I called them as soon as they opened the next morning to make sure they had nite sites and confirm the order. I'm not sure how many of them they had but I was glad I did it like that because they were gone that same nite. At $481.80 + 7.99 shipping + 10 for my FFL and a total of $499.79 I think I got a decent deal for the first batch of them coming in